Home / 129,627.08-178,895.76-72,285.14

Finding the Fourth Proportional to 129,627.08, 178,895.76 and 72,285.14

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Solution

The fourth proportional to 129,627.08, 178,895.76 and 72,285.14 is: 99,759.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,627.08 : 178,895.76 = 72,285.14 : x
  2. Step 2: Convert to fraction form
    129,627.08/178,895.76 = 72,285.14/x
  3. Step 3: Cross multiply
    129,627.08x = 178,895.76 × 72,285.14
  4. Step 4: Simplify right side
    129,627.08x = 12,931,505,057.01
  5. Step 5: Solve for x
    x = 12,931,505,057.01/129,627.08
  6. Step 6: Final answer
    x = 99,759.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.